New Zealand-born Gatland tested his Wales side’s knowledge of Italy ahead of the recent Six Nations clash but questioned whether his compatriots employ a similar practice.

“How many All Blacks would know the players in the Wales team if they were playing them tomorrow?” he said.

Graham Henry’s side have faced fierce criticism since a quarter-final exit to host nation France in last year‘s rugby world cup – the All Blacks’ worst-ever performance in the competition – despite entering the tournament as overwhelming favourites.

But Tew insists the All Blacks approach all matches with the utmost professionalism.

He said: “I did read Warren’s comments and I presume he‘s got a reason for making them.

“Certainly, from my experience, all of our professional rugby teams spend a considerable amount of time analysing the opposition, preparing for every game, so I find it a little bit hard to understand that criticism, but he’s entitled to his views.”